Nest building removal bag

Abstract

To provide nest building removal bag that can suppress falling and scattering of the construct of a nest building when a nest is removed from a high place.SOLUTION: A nest building removal bag 1 is used for the purpose of removing a nest building that exists in a high place of a structure such as a steel tower 6. The nest building removal bag 1 includes: a bag body 2 having a capacity in which a nest building can be stored and having an opening 2H for taking in a nest building; a holding sheet 3 for blocking the opening 2H; a tightening rope 4 which can tighten the opening 2H, with the holding sheet 3 blocking the opening 2H; and a shouldering belt 5 which is used when a worker shoulders the bag body 2. The holding sheet 3 is combined with the bag body 2 by a seam part 31.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a nest removal bag used to remove nests located at high places on structures such as power transmission towers. [Background technology]

[0002] Crows and other wild birds sometimes build nests on steel towers that support high-voltage transmission lines. In rare cases, parts of the nesting structure, such as conductive wires, can create short circuits and cause ground faults. For this reason, it is desirable to remove the nests as soon as possible. To remove the nests, workers must climb up to the nesting location on the steel tower, remove the nests, and carry them back to the ground.

[0003] Patent Document 1 discloses a foldable nesting material storage work net. A worker climbs a tower with the nesting material storage work net folded, assembles it into the original work net, and removes the nests using the work net. Patent Document 2 discloses a nest removal bag that includes a sheet that is deployed on the tower below the nests and wraps up and recovers the nests that have been dropped from the tower. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-182734 A [Patent Document 2] JP 2018-38308 A Summary of the Invention [Problem to be solved by the invention]

[0005] When removing nests from high places, it is essential to prevent the nesting materials from falling or scattering when removing the nests from the tower and when carrying the removed nests home. However, with the work net in Patent Document 1, the nesting materials inevitably fall and scatter. With the nest removal bag in Patent Document 2, the nesting materials are likely to scatter when the nests are dropped onto the sheet.

[0006] An object of the present invention is to provide a nest removal bag that can prevent nesting materials from falling or scattering when removing them from a high place. [Means for solving the problem]

[0007] A nest removal bag according to one aspect of the present invention is a nest removal bag for removing nests that exist at high points on a structure, and comprises a bag body having a volume capable of accommodating nests and having an opening for introducing the nests, a pressing sheet that covers the opening, and a squeezing means that can squeeze the opening while the pressing sheet is covering the opening.

[0008] With this nest removal bag, it is possible to introduce the entire nest into the bag body through the opening. For example, the nest can be introduced into the bag body by wrapping it from the opening. This makes it easy to prevent the nest components from falling or scattering when removing the nest from the structure. After the nest is introduced, the opening can be closed with a pressing sheet, and further constricted with a constricting means. Therefore, it is possible to prevent the nest components from falling or scattering when carrying the nest back to the ground from a high place.

[0009] In the nest removal bag described above, it is desirable that the pressing sheet has a joining portion where a part of the peripheral edge of the pressing sheet is joined to the bag body.

[0010] With this nest removal bag, the opening of the bag body can be opened and closed while the pressing sheet is connected to the bag body at the joint. This makes it easy to remove nests. For example, after the nest is placed in the bag body, the pressing sheet can be easily placed over the nest. In addition, since the pressing sheet is integrated into the bag body, the nest removal bag is easy to transport when ascending to high places and easy to store in warehouses, etc.

[0011] In the above-mentioned nest removal bag, it is desirable that the connection portion has a connection configuration in which, when the bag body is positioned so that the opening faces downward, the pressing sheet hangs down from the connection portion to open the opening substantially fully.

[0012] With this nest removal bag, when the bag body is oriented so that the opening faces downward, the pressing sheet hangs down and the opening opens. This makes it easy to place the bag body over the nest from above, lift the nest while inverting the bag body, and place the nest inside the bag body. By performing this operation, it is possible to minimize the spillage of nesting components.

[0013] In the above nest removal bag, it is desirable that the bag body has a circular bottom and a cylindrical side extending upward from the periphery of the bottom, and that the opening is located at the upper end of the side.

[0014] Most nests are circular and dome-shaped. The nest removal bag described above can increase nest containment efficiency.

[0015] In this case, it is more preferable that the bag body has a shape in which the height of the side portion is shorter than the diameter of the bottom portion.

[0016] According to this nest removal bag, the bag body is cylindrical with a short axis, i.e., a thin cylindrical shape. Therefore, after the nest is removed, the bag body can be made compact, and contact with the live part can be made less likely.

[0017] In the above nest removal bag, it is desirable to further provide a shoulder belt attached to the back of the bottom portion and enabling an operator to carry the bag body on his / her back.

[0018] With this nest removal bag, after the worker has put the nests into the bag body, he can carry the nest removal bag on his back using the shoulder strap when carrying the nests home. This leaves both hands free for the worker to descend smoothly from high places.

[0019] In the above nest removal bag, it is desirable that the pressing sheet is connected to the bag body so that the connecting portion is located on the upper end side of the bag body when the bag body is carried on the worker's back.

[0020] When the worker carries the bag on his back, the holding sheet hangs down from the joint. In other words, the holding sheet naturally closes the opening. This further prevents nesting materials from falling when the worker descends from a high place.

[0021] In the nest removal bag described above, it is desirable that the bag body has a plurality of through holes on the peripheral portion of the opening, and the tightening means is a tightening rope inserted into the plurality of through holes.

[0022] With this nest removal bag, it is possible to completely encase the nests by simply closing the opening of the bag body with the pressing sheet and then tightening the opening with the tightening rope, thus improving the efficiency of the nest removal work. Effect of the Invention

[0023] According to the present invention, a nest removal bag can be provided that can prevent nesting materials from falling or scattering when removing them from a high place. [Brief description of the drawings]

[0024] [Figure 1]FIG. 1(A) is a schematic perspective view of a nesting removal bag according to one embodiment of the present invention, and FIG. 1(B) is a perspective view of the nesting removal bag with a nesting intake opening open. [Diagram 2] FIG. 2(A) is a front view of the bag body of the nest removal bag, FIG. 2(B) is a side view of the bag body, and FIG. 2(C) is a front view of the pressing sheet. [Diagram 3] FIG. 3 shows the nest removal bag being carried on the worker's back. [Figure 4] 4(A) to 4(C) are diagrams showing the procedure for removing nests on a tower using a nest removal bag. [Diagram 5] 5(A) to 5(C) are diagrams showing a procedure for removing nests on a tower using a nest removal bag. [Figure 6] 6(A) to 6(C) are diagrams showing a procedure for removing nests on a tower using a nest removal bag. [Figure 7] FIG. 7 is a front view of an example of a nest removal bag. [Figure 8] FIG. 8 is a rear view of an example nest removal bag. [Figure 9] FIG. 9 is a plan view of an example of a nest removal bag. [Figure 10] FIG. 10 is a right side view of an example nest removal bag. [Figure 11] FIG. 11 is a left side view of an example nest removal bag. [Figure 12] FIG. 12 is a bottom view of an example nest removal bag. [Figure 13] FIG. 13 is a perspective view of an example of a nesting removal bag. [Figure 14] FIG. 14 is a diagram showing an example of a nest removal bag with the pressing sheet open. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, a nest removal bag according to an embodiment of the present invention will be described in detail with reference to the drawings. The nest removal bag of this embodiment is a bag used when a worker removes a wild bird nest that exists at a high place of a structure such as a high-rise building, a radio tower, a monument, a power transmission tower, or a utility pole, and takes the nest home. One of the preferred specific uses of the nest removal bag of this embodiment is to remove and house a nest that a crow makes on a steel tower supporting a high-voltage transmission line. In this case, a worker brings the nest removal bag and climbs up to the nesting site on the steel tower, removes the nest, puts the nest in the nest removal bag, and then descends from the steel tower.

[0026] [Composition of nest removal bag] Fig. 1(A) is a schematic perspective view of a nesting removal bag 1 according to one embodiment of the present invention. The nesting removal bag 1 comprises a bag body 2, a holding sheet 3, a tightening rope 4 (tightening means), and a shoulder belt 5. Fig. 1(B) is a diagram showing the nesting removal bag 1 of Fig. 1(A) with the holding sheet 3 open. Fig. 2(A) is a front view of the bag body 2, Fig. 2(B) is a side view of the bag body 2, and Fig. 2(C) is a front view of the holding sheet 3.

[0027] The bag body 2 has a volume capable of accommodating the nests to be removed, and has an opening 2H for introducing the nests. The bag body 2 can be made of high-strength cloth such as hood fabric or denim, or a sewn product such as leather or a synthetic resin sheet. The bag body 2 has a circular bottom 21 and a cylindrical side 22 extending upward from the periphery of the bottom 21. The opening 2H for introducing the nests is a circular opening located at the upper end 23 of the side 22. The bag body 2 has a height h of the side 22 that is shorter than the diameter d of the bottom 21, that is, it has a cylindrical shape with a short axis.

[0028] Bird nests generally have a circular dome shape, including a central part where eggs are laid and the birds are raised, and an outer periphery that supports the central part. By making the bag body 2 have a short cylindrical shape, the accommodation efficiency of the dome-shaped nest can be increased. In addition, the bag body 2 can be made compact after the nest is installed, making it less likely for the bird to come into contact with the live parts of the tower.

[0029] The nests that crows build on high-voltage electricity transmission towers are about 50 cm to 70 cm in diameter and 20 cm to 30 cm in height. The constituent materials include tree branches, grass stalks, feathers, etc., but may also include conductive man-made objects such as electric wires and metal wires. When such crow nests are to be removed, for example, a canopy fabric with excellent strength and flexibility can be used to form the bag body 2 with a diameter d of 60 cm at the bottom 21 and a height h of 30 cm at the side 22.

[0030] d / h can be selected from the range of about 1 to 3, preferably about 1.5 to 2.5. If d / h is less than 1, the bag body 2 becomes a long cylinder in the axial direction, and when a worker carries the nest removal bag 1 on his back, the degree of protrusion from the back increases. In this case, the possibility of contact with the live part increases, and contact with the tower aggregate occurs, which is likely to cause problems such as impeding the climbing up and down of the tower. On the other hand, if d / h is more than 3, the bag body 2 becomes an excessively short cylinder shape, and the nest accommodation capacity deteriorates. In addition, aggregates for maintaining the cylindrical shape of the bag body 2 and frame materials for enabling folding may be incorporated. Of course, the bag body 2 may be freely foldable or rollable without integrating aggregates, etc.

[0031] The holding sheet 3 is a circular sheet that closes the opening 2H of the bag body 2. The holding sheet 3 has a diameter equal to the diameter d of the bottom 21, and can be made of the same material as the bag body 2. The nests contained in the bag body 2 through the opening 2H are held down by the holding sheet 3 to prevent them from falling out of the opening 2H.

[0032] The pressing sheet 3 has a sewn portion 31 (joint portion) for joining to the bag body 2. The sewn portion 31 is formed by sewing a part of the pressing sheet 3 to the upper end 23 of the bag body 2 in the vicinity of the periphery of the circular pressing sheet 3. The length of the stitching may be about 1 / 8 to 1 / 15 of the periphery of the pressing sheet 3. The remaining part of the periphery of the pressing sheet 3 is not sewn to the bag body 2. Therefore, the pressing sheet 3 can be freely moved relative to the bag body 2 with the sewn portion 31 as the base end. That is, the opening 2H of the bag body 2 can be freely opened as shown in FIG. 1(B) or closed as shown in FIG. 1(A).

[0033] Furthermore, when the bag body 2 is oriented so that the opening 2H faces downward, the pressing sheet 3 hangs down from the seam 31 under its own weight, and the opening 2H can be substantially fully opened. By making the seam 31 in such a manner of connection, when the worker oriented the bag body 2 so that the opening 2H faces downward, the pressing sheet 3 hangs down and the opening 2H can be opened automatically. This makes it easier to cover the nest with the bag body 2 from above, lift the nest while inverting the bag body 2, and introduce the nest into the bag body. This makes it possible to introduce the nest into the bag body 2 while minimizing the spilling out of the nesting components.

[0034] The pressing sheet 3 can be separate from the bag body 2. However, if the pressing sheet 3 is integrated with the bag body 2 by the stitching 31, the opening 2H can be opened and closed with the pressing sheet 3 connected to the bag body 2. This provides excellent nest removal workability. For example, after the nest is taken into the bag body 2, the work of placing the pressing sheet 3 over the nest can be easily performed. In addition, the nest removal bag 1 is also excellent in transportability when ascending and descending to high places. Furthermore, when storing in a warehouse or the like, the pressing sheet 3 does not separate from the bag body 2, and the pressing sheet 3 can be prevented from being lost. Note that other joining parts other than sewing may be used, for example, the bag body 2 and the pressing sheet 3 may be joined by a hook-and-loop fastener.

[0035] The squeeze rope 4 is made of a strong fiber strand and is provided to squeeze the opening 2H when the pressing sheet 3 closes the opening 2H. The upper end 23 of the bag body 2, i.e., the peripheral portion of the opening 2H, is provided with a plurality of through holes 24 arranged at equal intervals in the circumferential direction. The squeeze rope 4 is inserted through the through holes 24. In this embodiment, the squeeze rope 4 and the through holes 24 are squeezing means for squeezing the opening 2H. The squeeze rope 4 is inserted from the inside of the bag body 2 through the through holes 24 to the outside, and then through the next through hole 24 in the circumferential direction from the outside to the inside. The opening 2H can be squeezed by pulling both rope ends 41 of the squeeze rope 4 and shortening the distance between the through holes 24. Instead of the through holes 24, a circumferential through hole formed by folding back and sewing the upper end 23 of the bag body 2 may be provided, and the squeeze rope 4 may be inserted through the circumferential through hole to form a purse-type squeezing means.

[0036] The backpack belt 5 is a belt for carrying the bag body 2 on the worker's back. The backpack belt 5 is made of a pair of belt pieces attached in a loop shape to the back of the bottom 21 of the bag body 2. There is no limitation on the form of the backpack belt 5, as long as it is easy for the worker to carry it on his / her back. Note that FIG. 8 illustrates a backpack belt 5 in which a pair of belt pieces are arranged in a V-shape. After the worker has put the nests into the bag body 2, the worker can use the backpack belt 5 to carry the nest removal bag 1 on his / her back when carrying the nests home. This leaves both hands of the worker free to smoothly descend from a high place.

[0037] 3 is a diagram showing the nest removal bag 1 being carried on the back of a worker OP. The shoulder strap 5 is passed over the shoulder of the worker OP, and the bottom 21 of the bag body 2 faces the back of the worker OP. The tightening rope 4 has a rope end 41 pulled, and the opening 2H is tightened so as to push the holding sheet 3 into the inside of the bag body 2. A fastening part 42 to which the tightening rope 4 is tied is formed at the pulled-out part of the tightening rope 4. Since the bag body 2 has a short cylindrical shape, it does not protrude much from the back of the worker OP even when it contains nests.

[0038] The holding sheet 3 is connected to the bag body 2 so that the seam 31 is located at the upper end side of the bag body 2 when the worker OP carries the bag body 2 on his / her back. In FIG. 3, the seam 31 is hidden by the tightening of the tightening rope 4, but the seam 31 is located near the upper end of the bag body 2 being carried on the worker's back. With such a seam 31, the holding sheet 3 hangs down from the seam 31 when the worker OP carries the bag body 2 on his / her back. In other words, the holding sheet 3 naturally assumes a position that closes the opening 2H. Therefore, for example, when the worker OP descends from a high place after removing the nest, it is possible to further prevent the nesting components from falling off the bag body 2.

[0039] [Example of using nest removal bags] Next, an example of using the nesting removal bag 1 described above will be described. Figures 4(A) to 6(C) are diagrams showing the procedure for removing nesting BN on a steel tower 6 using the nesting removal bag 1. The steel tower 6 includes main pillar members 61 extending in the vertical direction, horizontal members 62 extending horizontally from the main pillar members 61 and connecting the pair of main pillar members 61, and reinforcing diagonal members 63. Figures 4 to 6 show an example in which a nesting BN is created at the extending positions of the horizontal members 62 and diagonal members 63 on the main pillar members 61. The nesting BN is roughly circular in top view, has a dome-like shape with the center bulging downward, and has a nesting underside supported by the horizontal members 62.

[0040] The worker carries the nest removal bag 1 and climbs up to the position on the tower 6 where the nesting BN has been created. The nest removal bag 1 can be carried in a rolled up or folded state. When the worker reaches the position of the nesting BN, he places the nest removal bag 1 above the nesting BN as shown in FIG. 4(A). The nest removal bag 1 is in a state where the tightening rope 4 is loosened, the holding sheet 3 is not restrained, and the opening 2H of the bag body 2 is open. In this state, the nest removal bag 1 is inverted, that is, the opening 2H of the upper end 23 is facing downward, and the nest removal bag 1 is placed over the nesting BN. The holding sheet 3 is in a hanging state.

[0041] Next, as shown in Fig. 4(B)-(C), the worker wraps the nesting BN and takes it into the bag body 2 through the opening 2H. The eggs and chicks in the nesting BN are protected by putting them in a storage bag that the worker brought separately. If nesting components near the outer edge of the nesting BN, such as tree branches, protrude from the covered area of ​​the opening 2H, the worker places the protruding branches in the bag body 2 with his fingers. That is, as shown in Fig. 4(C), with the nesting removal bag 1 placed over the nesting BN from above, if there are branches protruding from the nesting removal bag 1, the worker uses his fingers to stuff the branches into the bag body 2.

[0042] Through the above operations, the entire nesting BN becomes wrapped in the bag body 2. Next, the worker lifts the nesting BN while holding the nesting removal bag 1 with both hands so that the nesting BN remains wrapped. If any part of the nesting BN is attached or engaged with the horizontal member 62 of the tower 6, this attachment or engagement is released. After that, as shown in FIG. 5(A), the worker turns the nesting removal bag 1 over. In other words, the worker rotates the nesting removal bag 1 half a turn so that the opening 2H faces upward.

[0043] Thus, in this embodiment, lifting (removal) of the nesting BN from the tower 6 and putting the nesting BN into the nesting removal bag 1 are performed almost simultaneously. For example, in the case of a simple bucket-shaped nesting removal bag, a two-step operation is required: lifting the nesting BN from the tower 6 and then storing the nesting BN in the bucket-shaped bag. When lifting the nesting BN, nesting components such as branches are likely to fall. In addition, when putting the lifted nesting BN into the bag, nesting components may fall. However, by using the nesting removal bag 1 of this embodiment, the nesting BN can be lifted and bagged in one go, so that the occurrence of falling objects can be significantly suppressed.

[0044] Next, the worker places the inverted nest removal bag 1 on the horizontal member 62, as shown in Figure 5 (B). Any branches or the like that protrude from the bag body 2 during the inversion are pushed into the bag body 2. Next, the worker closes the opening 2H with the pressing sheet 3 so as to press down on the nest BN from above, as shown in Figure 5 (C). At this time, the outer peripheral edge portion of the pressing sheet 3 is pressed into the gap between the contained nest BN and the side portion 22 of the bag body 2 so that no gap is created between the pressing sheet 3 and the upper end 23 of the bag body 2.

[0045] FIG. 6(A) shows the state where the closing of the opening 2H by the holding sheet 3 is completed. At this stage, it is checked whether any nesting components are protruding from the bag body 2. If the nesting BN is well contained in the bag body 2, the opening 2H is tightened by the tightening rope 4. That is, as shown in FIG. 6(B), the worker pulls the rope end 41 to tighten the opening 2H so that the diameter of the opening 2H becomes smaller. At this time, the worker pulls the rope end 41 while holding down the outer peripheral edge portion of the holding sheet 3 so that the outer peripheral edge portion of the holding sheet 3 is lower than the height position of the tightening rope 4. This operation results in the upper end 23 of the bag body 2 overlapping the outer peripheral edge portion of the holding sheet 3 from above.

[0046] Finally, as shown in FIG. 6(C), the worker ties a knot in the excess length of the rope end 41 generated by pulling it to form the fastening portion 42. The fastening portion 42 tightens the opening 2H, and the tightening rope 4 maintains the state in which it presses the outer edge portion of the holding sheet 3. In other words, the nesting BN contained in the bag body 2 is maintained in a state of being held down by the holding sheet 3. After that, the worker uses the shoulder strap 5 to carry the nesting removal bag 1 on his back. This carrying state is as shown in FIG. 3 above. The worker descends from the tower 6 with the nesting removal bag 1 on his back. Since the nesting BN is completely wrapped in the bag body 2 and the holding sheet 3, the nesting components will not scatter when descending the tower.

[0047] [Example of nest removal bag] 7 to 14 are diagrams showing an example of the nesting removal bag 1. The reference numerals in Figs. 7 to 14 are the same as those in Figs. 1 to 6. The nesting removal bag 1 comprises a bag body 2, a holding sheet 3, a drawstring rope 4 and a shoulder belt 5. Fig. 7 is a front view of the nesting removal bag 1. The top surface of the bag body 2, that is, the direction directly facing the holding sheet 3, is treated as the front view. Fig. 8 is a rear view of the nesting removal bag 1, Fig. 9 is a plan view, Fig. 10 is a right side view, Fig. 11 is a left side view, Fig. 12 is a bottom view and Fig. 13 is a perspective view.

[0048] 14 is a perspective view of the nest removal bag 1 with the pressing sheet 3 open. The pressing sheet 3 is raised upward with the seam 31 in a rotated position, exposing the opening 2H of the bag body 2. The rope end 41 of the tying rope 4, which is arranged in the circumferential direction along the upper end 23 of the bag body 2, is located on the back side of the seam 31. The tying rope 4 is not pulled, and the opening 2H is in its widest state.

[0049] According to the nesting removal bag 1 described above, the nesting BN can be taken into the bag body 2 in its entirety through the opening 2H. For example, as illustrated in Figs. 4 and 5, the nesting BN can be taken into the bag body 2 from above by wrapping it through the opening 2H, and the nesting BN can be removed from the tower 6 by lifting the nesting BN while turning over the bag body 2. This makes it possible to prevent the nesting components from falling and scattering when removing the nesting BN from the tower 6. After the nesting BN is taken in, the opening 2H can be closed with the holding sheet 3, and the opening 2H can be further tightened with the tightening rope 4. This makes it possible to prevent the nesting components from falling and scattering when the tower 6 is lowered to the ground. [Explanation of symbols]

[0050] OP Operator BN Nesting 1. Nest removal bag 2 Bags 2H opening 21 Bottom 22 Side 23 Top 24 Through hole (throttling means) 3 Presser sheet 31 Suture part (joint part) 4. Squeezing rope (squeezing means) 5. Shoulder strap 6. Steel Tower

Claims

1. A nest removal bag for removing nests present at high places of a structure, A bag body having a volume capable of accommodating a nest and having an opening for introducing the nest; A pressing sheet that closes the opening; a squeezing means capable of squeezing the opening while the pressing sheet is closing the opening; Equipped with nest removal bags.

2. In the nest removal bag according to claim 1, The nest removal bag has a connecting portion where a portion of the peripheral edge of the pressing sheet is connected to the bag body.

3. In the nest removal bag according to claim 2, The connection portion has a connection configuration in which, when the bag body is positioned so that the opening faces downward, the pressing sheet hangs down from the connection portion to open the opening substantially fully.

4. In the nest removal bag according to claim 2 or 3, The nest removal bag, wherein the bag body has a circular bottom and a cylindrical side extending upward from the periphery of the bottom, and the opening is located at the upper end of the side.

5. In the nest removal bag according to claim 4, The nest removal bag has a shape in which the height of the side portion is shorter than the diameter of the bottom portion of the bag body.

6. In the nest removal bag according to claim 4, The nest removal bag further includes a shoulder belt attached to the back of the bottom portion and allowing an operator to carry the bag body on his / her back.

7. The nest removal bag according to claim 6, The nest removal bag has a pressing sheet connected to the bag body so that the connecting portion is located on the upper end side of the bag body when the bag body is carried on the worker's back.

8. In the nest removal bag according to claim 1, The bag body has a plurality of through holes in a peripheral portion of the opening, The nest removal bag, wherein the squeezing means is a squeezing rope inserted into the multiple through holes.

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